Many to many master detail form

Hi All,
APEX 3.1.2 on SuSE 10 Oracle 10.2.0.3 64 bit
I am new to APEX, but used OAS several years ago. Back then I hardcoded all htp.print commands. We are building an intra-team application to track system relationships. For example,
web interface 3 --> application server 2 --> database 6
Our tables are similar to the following
SYSTEMS
system_id (unique sequence)
system_type_id (database, app server, apache, etc.)
SYSTEM_TO_SYSTEM
publishing_system_id - number
consuming_system_id - number
We would like to have a master detail form where we would query database 6 for example, and then see all related systems one level below it (application server 2 in the example above). I have been able to query the related systems and show them in a drop down pick list on the detail form, but I cannot edit them.
The wizard asked for the primary key of the detail table, which in this case is not a sequence generated value, but a pick from a systems table lookup on system_id/system_name.
If the master form would automagically lass the system_id to the publishing_system_id on the detail form, and allow me to update that with a picked system_id tied to consuming_system_id, that would be perfect.
I can write the htp calls I mentioned earlier, but I am sure I am missing something.
Does anyone have any best practices for this?
Thanks!
Steve

Hi Steve,
Here is an example which might help you:
http://apex.oracle.com/pls/otn/f?p=43368:35
Here, I have used two tables e.g. test1 and test2. Test1 has an id column which is just a sequence column and the name column in this table has a unique key.
Table test2 has id column as primary key and name1 column is linked with Test1 table on the Form. Name2 column is not required to be linked with Test1 table.
If this is what you are after, then I can give your more detail for it.
Hope it helps.
Zahid

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Dynamic action in a report region in a master detail form

hi
I have created a master detail form , in which many validation etc is done ,the MASTER is a FORM and DETAIL is a REPORT
Now I am stuck up with the detail region .i.e report
I have Line Detail where there are ITEMS such as SL NO: ,ITEM_ID , UOM ( Unit of measuremnt ) etc
Now here is where I need help .
Using POP UP LOV i have managed to fetch in LOV for the item "ITEM_ID",--- i can select an item name using the pop up LOV ,
Now all that I want is when I select an item name from the pop up lov , an Item Id is displayed or fetched in that particular place , now i want the corresponding UOM to be diaplayed ( i.e the UOM for that particular Item Id which has been selected by me from the pop up lov ).
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DYNAMIC action
-IDENTIFICATION section
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ITEMS of the MASTER region ..
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Inserting records in master detail form

I am moving an existing Webdb Application to portal. In the application there is a master detail form along the following lines
Dept Id: 10
Dept Name: IMS
Employee ID Employee Name etc
1586 Julie Wilks
Currently users can insert/update/delete detail lines. When inserting, the dept_id foreign key is automatically inserted into the dept_id column in the detail table. My understanding is that for some reason this does not happen in portal. Instead, the user is expected to input any foreign keys manually. As this could lead to all sorts of problems I'd rather not have to do this.
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Hi,
Am I the only one having this problem?
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Master Detail Form - Update Statement for Column in the Detail Section

Hello,
I've posted a demo application to apex.oracle.com
Application# 49298
Application Name: Street_Inventory
Basically, on page 3 I have a Master Detail Form. In the Detail section, I want the value of On_hand to save to table ITEMS. Here's my code below.
SOURCE
select
"CONSUME_DETAIL"."CONSUME_DETAIL_ID",
"CONSUME_DETAIL"."CONSUME_HEADER_ID",
"CONSUME_DETAIL"."ITEM_ID",
"CONSUME_DETAIL"."CONSUMED_QUANTITY",
("ITEMS"."ON_HAND" - "CONSUME_DETAIL"."CONSUMED_QUANTITY") as "ON_HAND"
from "CONSUME_DETAIL",
"ITEMS"
where "CONSUME_HEADER_ID" = :P3_CONSUME_HEADER_ID
and "CONSUME_DETAIL"."ITEM_ID"="ITEMS"."ITEM_ID"
UPDATE INVENTORY PROCESS
UPDATE ITEMS
SET ON_HAND = :P3_ON_HAND - :P3_CONSUMED_QUANTITY
WHERE ITEM_ID = (select ITEM_ID
from CONSUME_DETAIL
where CONSUME_DETAIL_ID = :P3_CONSUME_DETAIL_ID);
My code isn't working. What am I doing wrong?

WReed,
The first thing I see "off the bat" is that you don't have items named P3_ON_HAND and P3_CONSUMED_QUANTITY which are referenced in your code. Although it's possible to do what you want with just SQL, I updated your code with a little PL/SQL to make it easier to understand...
As you'll see the problem now is that the design/db model is not quite right as your getting a too many rows error.
Regards,
Dan
http://danielmcghan.us
http://sourceforge.net/projects/tapigen

Master-Detail Form in Form6i Developer

First of All Hi to all Respected Gurus.
I am stuck in a very basic element and that is Primary-Key/Foreign-Key relation. I am trying to create a Master-Detail Form based on following structure. Records in Master Table and Child Table are saving (inserting) but Primary Key of Master Table is not saving (inserting) as "Foreign Key" in Detail Table.
Here is Table Structure(s)
Master Table Name : MGTC_EDM
CREATE TABLE MGTC_EDM
EDM_ID NUMBER, -- PRIMARY KEY
BILLING_DATE DATE,
CONSTRAINT PK_MGTCEDM_EDMID PRIMARY KEY (EDM_ID)
CHILD TABLE : MGTC_EDD
CREATE TABLE MGTC_EDD
EDD_ID NUMBER; -- PRIMARY KEY
EDM_ID NUMBER; -- FOREIGN KEY RELATION WITH MGTC_EDM
MEM_ID NUMBER;
AMOUNT NUMBER;
CONSTRAINT PK_MGTCEDD_EDDID PRIMARY KEY (EDD_ID),
CONSTRAINT FK_MGTCEDD_EDMID FOREIGN KEY (EDM_ID)
REFERENCES MGTC_EDM (EDM_ID)
TRIGGER OF "BEFORE_INSERT" IS APPLIED ON BOTH TABLES TO AUTO-POPULATE INCREMENTAL ID
IN FORM6I, I'VE APPLIED A 'KEY_NEXT_ITEM' TRIGGER ON BILLING_DATE FIELD OF MASTER TABLE TO COMMIT THE RECORD AND TO MOVE THE CURSOR TOWARDS DETAIL BLOCK
AND THERE ARE NO MORE TRIGGERS IN THE FORM.
AS CURSOR MOVES TOWARDS DETAIL BLOCK, RECORD IN MASTER TABLE SAVES (COMMITTED) ON AUTO AND WHEN I PRESS "SAVE" BUTTON TO SAVE THE RECORD IN CHILD FORM DETAIL TABLE ALSO COMMITTED
BUT WHEN I PRESS F8 TO EXECUTE THE QUERY ONLY MASTER RECORD SHOWS AND NO RECORD SHOWS IN THE DETAIL TABLE. WHEN I CHECKED IN DETAIL TABLE IN TOAD, IT FOUND THAT PRIMARY KEY OF MASTER TABLE (EDM_ID) NOT SAVED IN DETAIL TABLE.
PLEASE HELP.

Dear Mr. O.Developer, Many thanks for your reply.
Yes, I've created relationship. Relationship exist in Master_Block and below is the detail
Relationship Name = MGTC_EDM_MGT_EDD
Relation Type = Join
Detail Data Block = MGTC_EDD
Join Condition = MGTC_EDD.EDM_ID = MGTC_EDM.EDM_ID
Delete Record Behavior = Non Isolated
Prevent Masterless Operations = No
Deferred = No
Automatic Query = No

Add a new row in Detail form in MASTER DETAIL FORM

Hello Everyone,
I need help on the following.I have master detail form .In detail form i have Add Row button which adds a new row and i have save button to save the record .But now if i am adding a row its not adding a new row .It says it process but didn't show the new row .
Can somebody help me on this
thanks in advance

Hello,
How many records do you show in your detaii region and how many are there for that master? Maybe the new row is in the next set of records - or at the 'bottom' of the last set of records?
Did you check if the row is inserted in the database (and just didn't show up for one reason or another)?
Greetings,
Roel
http://roelhartman.blogspot.com/
http://www.bloggingaboutoracle.org/
http://www.logica.com/

Radio Group in Master Detail Form

Hi There,
I want to create a radio group with 2 options (Yes, No) for a detail-record within a master-detail form and I would like to save the selected option in a table-column, which is of Varchar2 and has the length of 1 (Y,N).
How can I do that.
I do not have a clue where to start from.
In the guides I just could find ways of how to display information through a sql query in a radio-group and just in master-records.
Thank you!!

Unfortunately it doesn't appear that you can use a radiogroup display for tabular form column definitions. You can however use a select list.
This makes sense because radiogroups could possibly consume far too much page real estate if the LOV was a long list, whereas a select list would always consume the same space no matter how many entries were in the LOV.
If you want to pursue this just make sure that you have a column defined in your detail table with the correct datatype, as you described. Then when you create the detail form view you can modify the report column to display as a select list by going to the Report Attributes tab of the region definition, select the individual column you want to change and in the Tabular Form section of the Column Attrributes set the Display As to a Select List along with the appropriate LOV type, go to the LOV for the column further down the page and select or define the LOV. Click Apply Changes and your on your way.
Earl

Master Detail Forms with 2 composite primary keys - Is there a workaround?

Hello All,
I have been searching for a workaround to the maximum 2 part primary key restriction on the multi-row updates, and master-detail forms, and am hoping that someone can help me. I am using HTMLDB v2.0.0.00.49 with IE 6 against a 9.2 DB.
I successfully implemented the workaround of Fred Stoopendaal's (see Updata PK on HTML DB ) and it works fine for single page multi-record updateable forms, but alas I haven't been able to extend it to master detail forms (I think it is something to do with Oracle not allowing the "returning" clause on views).
Here is what I tried:
two tables, one with a 2 part composite primary key, which is the master table, and a detail table with 3 part composite primary key -
--------- BEGIN SQL ---------
create table master_table
( master_col1 number
, master_col2 number
, master_col3 varchar2(30)
, constraint master_pk primary key (master_col1,master_col2));
create table detail_table
(detail_col1 number
,detail_col2 number
,detail_col3 number
,detail_col4 varchar2(30)
, constraint detail_pk primary key(detail_col1,detail_col2,detail_col3)
, constraint master_detail_fk foreign key (detail_col1,detail_col2) references master_table(master_col1,master_col2));
create or replace view v_master_table as
select rowid mata_rowid,mata.*
from master_table mata;
create or replace view v_detail_table as
select rowid deta_rowid,
(select rowid from master_table mata where mata.master_col1 = deta.detail_col1 and mata.master_col2 = deta.detail_col2) deta_mata_rowid
, deta.*
from detail_table deta;
create or replace trigger mata_ins_upd_trg
instead of insert or update on v_master_table
referencing new as new old as old
for each row
begin
if inserting then
insert into master_table (master_col1, master_col2, master_col3)
values (:new.master_col1, :new.master_col2, :new.master_col3);
end if;
if updating then
update master_table
set master_col1 = :new.master_col1,
master_col2 = :new.master_col2,
master_col3 = :new.master_col3
where rowid = :old.mata_rowid;
end if;
end;
create or replace trigger deta_ins_upd_trg
instead of insert or update on v_detail_table
referencing new as new old as old
for each row
begin
if inserting then
insert into detail_table ( detail_col1, detail_col2, detail_col3, detail_col4)
values (:new.detail_col1, :new.detail_col2, :new.detail_col3, :new.detail_col4);
end if;
if updating then
update detail_table
set detail_col1 = :new.detail_col1,
detail_col2 = :new.detail_col2,
detail_col3 = :new.detail_col3,
detail_col4 = :new.detail_col4
where rowid = :old.deta_rowid;
end if;
end;
--------- END SQL ---------
Then I created a master-detail form in Apex on the two views, using the mata_rowid and deta_rowid as primary keys, and mata_rowid=deta_mata_rowid as the link. I realise that using a function to fetch the master rowid within the detail view query is costly, but it was my intention to modify the record fetch queries to use the real FK columns once things were up and running.
It seems to generate the pages ok, and I can insert/update master table records, but as soon as I modify records in the detail table things go a bit haywire. I can't find any documentation on how the inbuilt MRU/MRD logic works, so can't figure out the issue.
Can anyone out there tell me what the problem is with the logic above, or if they have come up with a neat solution to this annoying limitation. I know that many will say that I should modify the data model to use surrogate primary keys, but many of the uses for HTMLDB are new interfaces for old schemas, so a workaround that doesn't involve wholesale data model changes would be preferable.
Thanks in advance,
Mike Cretan

Hi, this is likely not the most elegant way...but perhaps the simplest -- and I didn't have much time to play.
I used Wizard to create two separate Master Detail forms, each with a separate detail table. Thus I ended up with four pages:
Page "A" - "Selector" page for Master (Report), with Edit link driving to Detail-1
Page "B" - Editable Master/Detail-1 page (HTML / Report)
Page "C" - "Selector" page for Master (Report), with Edit link driving to Detail-2
Page "D" - Editable Master/Detail-2 page (HTML / Report)
Then I selected the primary key column TWICE on the Report on Page A. Modified the second instance of this column to navigate to Page D (passing primary key) exactly the way the original instance of this column navigates to Page B. Then I deleted Page C.
Since you can have only one Tabular Entry form per page, this seemed the best way to drive two separate detail tables from a common interface.

Populate row of master detail form with selection from LOV?

Hi Guys,
Total noobe, Hope you can help me out with a project I am working on in Oracle Apex 4.1 with 11g XE
I am sure this is a simple enough issue but I just can’t see the solution.
I have a table called ‘STOCK’ this contains all new parts and delivery details.
‘STOCK_ID’ NUMBER PK
‘DELIVERY DATE ‘ DATE
‘PART’ VARCHAR2
‘PART_SN’ VARCHAR2
‘PART_AN’ VARCHAR2
‘INSTALLED’ CHECKBOX
I have a table that list all the current physical locations of hardware for example
ID, Till number, store location etc…
I have an table to list the devices and modification to the hardware in these store locations.
Move Date, Device, Device Serial number, Device Asset Number, Comments
I have a report & form that displays all the current physical locations of hardware and a master detail form linked to this to add devices and modifications to each store location.
I have a LOV setup on the Devices column that is based on a simple select query
SELECT PART from STOCK
ORDER BY 1
This provides me the list of parts in the stock table.
What I need to figure out is how do I get the data from the ‘STOCK’ table when I select a part in the LOV to auto populate ‘DEVICE_SN’ ‘DEVICE_AN’ in my master detail tubular form. this information is contained in the 'PART_SN' & 'PART_AN' columns of the STOCK table.
I also need to figure out how to identify the part because by default the LOV only displays one column and I have no idea which part I am selecting other than by name. i could use a popup LOV and scan a barcode into the search box and get the retuen value to display the part name in the field.
I also would like to reduce the number of records displayed in the LOV by using the ‘INSTALLED’ checkbox i.e. if checked this part has been used and will not be available for selection. The ‘PART_SN’ field can be duplicated as we often get the same part back again as a replacement after repair but this should be valaditated against i.e if the parts is ticked as installed and not available for selection in the list it can be added again this could possibly be validated based on the ‘DELIVERY DATE‘?
I hope this make some sense to you guys if you need any further details let me know.
Cheers
Darren

Hi,
I am from the Oracle Forms background too and I have been using Oracle Apex for a while. Oracle Forms is just like client-server application although it uses the Forms servlet to render its Web front-end. I think...if you're really trying to develop true-Web application, you should try to forget such features as "master with many details" in Oracle Forms. Loading all the details in a single page will cause overheads anyway. When you discover more about ajax and such third-party javascript libraries as jquery and mootools, you'll have a different mind of Web development.
Thanks.
Andy

Master-Detail Form using Oracle XE...

Hi ,
Which type of page (blank , form , ....) should i select in order to create a master - detail form (dept - emp tables on SCOTT schema) in one and just one page (no tabs)...????
And also . . . is it possible the above form to be used for both inserts , updates and deletes...????
Many thanks ,
Simon

Hi Simon,
Use form then Master Detail Form.
You can insert, delete, and update rows.
http://htmldb.oracle.com/pls/otn/f?p=26372
for example of Master - Details - Details solution (not a form).
Konstantin

More than one Detail table in the Master Detail forms!

Hi,
I need to have more than one Detail table in Master Detail Forms.
I want to see the details of the rows of the first Detail table in the Second Detail table. Please guide me to do this.
Sincerely yours,
Mozhdeh

You can do one of two things
1) Depends on the nature of your data model. I was able to manage many to many
relationships using views and instead of triggers. This solution is somewhat complex but can work in certain situations.
2)Works for situations where master record exists. create a page with mulitple portlets syncronized on some related key.
create the following package to use on the md forms to place on the one page to be rendered.
-- this package will facilitate the storage and retrieval of keys used by the related forms.
create or replace package session_var
IS
session_parms portal30.wwsto_api_session;
g_domain varchar2(2000) := portal30.wwctx_api.get_user;
function get_id (id in varchar2) return number;
PROCEDURE SET_ID
(ID in VARCHAR2
,p_val in VARCHAR2
,P_URL in VARCHAR2
END SESSION_VAR;
create or replace package body session_var
IS
--pkg body
function get_id(id in varchar2) return number is
l_store_session portal30.wwsto_api_session;
l_id number;
begin
l_store_session := portal30.wwsto_api_session.load_session(
p_domain => session_var.g_domain,
p_sub_domain => 'your domain');
l_id := l_store_session.get_attribute_as_varchar2( p_name => id);
return l_id;
end get_id;
PROCEDURE SET_ID
(ID in VARCHAR2
,p_val in VARCHAR2
,P_URL in VARCHAR2
IS
l_store_session portal30.wwsto_api_session;
begin
l_store_session := portal30.wwsto_api_session.load_session(
p_domain => session_var.g_domain,
p_sub_domain => 'your domain');
l_store_session.set_attribute(
p_name => id,
p_value => p_val );
l_store_session.save_session;
* Redirect to the page using p_url;
portal30.wwv_redirect.url(P_URL);
end set_id;
END SESSION_VAR;
--the form master detail form, section before display page enter the following code and publish as portlet.
declare
l_fs varchar2(4000);
l_s varchar2(4000);
v_con_id number;
begin
v_con_id :=rfq.session_var.get_id('CON_ID'); -- primary key and key used to relate details
p_session.set_shadow_value( p_block_name => 'MASTER_BLOCK',
p_attribute_name => 'A_CON_ID', -- attribute on form related to primary key
p_value => '= '|| v_con_id,
p_language => portal30.wwctx_api.get_nls_language ,
p_index => 1
l_fs := p_session.get_value_as_varchar2(p_block_name => 'MASTER_BLOCK', p_attribute_name => '_FORM_STATE');
l_s := p_session.get_value_as_varchar2(p_block_name => 'MASTER_BLOCK', p_attribute_name => '_STATUS');
if l_fs = 'SAVE' and l_s is null then
WWV_MASTER_GENSYS_1(p_block_name => p_block_name,
p_object_name => p_object_name,
p_instance => p_instance,
p_event_type => p_event_type,
p_user_args => p_user_args,
p_session => p_session);
p_session.save_session;
end if;
if l_fs = 'QUERY_AND_SAVE' and l_s is null then
WWV_MASTER_GENSYS_1(p_block_name => p_block_name,
p_object_name => p_object_name,
p_instance => p_instance,
p_event_type => p_event_type,
p_user_args => p_user_args,
p_session => p_session);
p_session.save_session;
end if;
exception
when others then
PORTAL30.wwerr_api_error.add(PORTAL30.wwerr_api_error.DOMAIN_WWV,'app','generic','onLink', p1 => sqlerrm);
raise;
end;
--then create other md forms and publish as portlets in a similar manner.
-- create a form (form_session_vars) to call procedure session_vars and place the following code in the
addiontional pl/sql tab
WWV_GENSYS_1(
p_block_name => p_block_name ,
p_object_name => p_object_name,
p_instance => p_instance ,
p_event_type => p_event_type ,
p_user_args => p_user_args ,
p_session => p_session);
--then create a page and place the md forms created above as portlets on the page.
--create a link and target the form_session_vars and in the link target inputs
enter the values for your user parameters
id= CON_ID --"your primary key name"
p_url= url/page/"your_page"
--finally create a report (QBE or standard).
in the column formation section use the link created earlier to direct the user to the target page.
How it works.
When the link is selected the form_session_Var is called and automatically runs setting the primary key values
in the user session store. The step is required or the resulting page will not render properly. Then the user is redirected to the page where the portlets are rendered. The portlets start rendering, the before display page calls the session vars package to retrieve the key and put the form into query_update mode returning the data.
The portlets finish in query_and_save mode with details in update mode, the allowable insert, delete and none actions will be available for the details.
benefits: The session_Var package code is resuable as well as the form form_session_Var and the link. passing the key name and values are done at the report level and detailed in the report links. the md forms will need to reference their related keys.

Create Form setup for Master Detail Form

Hello All,
I have to create a Master Detail OAF Form where user will enter data in the header section and then fill the detail section on the same page. Now, I have created Header section but when I go to detail section and fill the information I got an error because HeaderId for header section is not passing to the detail section. I have created even VL also.
Kindly let me know that what all steps are required to set the View Link for this Master Detail form.
Many Thanks in advance.
Thanks,
Sandy

Hello Gyan,
Thanks for the prompt reply. I would also like to know that once AO will create what all steps I need to take. Like I have to create a VL and then I need to create two regions and now what all properties I need to update to work M-D relationship.
Thanks,
Sandy

Master Detail Form is ignoring the 4th join condition

Hello All,
I have master detail relationship between two tables with a
composite foreign key (of 4 columns). I'm creating a master
detail form in O9iAS Portal 3.0.9.8.0 on these 2 tables
successfully with no errors. The only thing I have noticed, is
that the wizard does not populate the join conditions
automatically in step#3. The form runs Okay but it ignores the
last condition (i.e., 4th), which means that it brings too many
details records.
Any ideas
Much appreciated if you can CC me: [email protected]
Hamada Hima

I had this same problem with master/detail form and 4 join conditions. I opened up a TAR and after several weeks
Oracle determined this to be a bug and submitted it to developers.
For a work around, I created a view with two of the join fields concatenated together, then created another md form
with 3 join conditions and it worked. Good luck.

How to access detail-rows in master-detail form?

I have a master-detail form(one to many relationship). The master and detail are in separate blocks. The detail rows are displayed in a tabular form.
I need to access the detail-rows since the database writes for the detail rows will be managed by a procedure.
I have been looking through the documentation and have been unable to find any syntax for iterating through the detail-rows.
Any help is appreciated. Thanks.

go_block(detail)
first_record;
in a loop while not last_record
-- do your stuff
next_record;
end loop;

Error creating Master/Detail Form

Hi,
I tried to create a master detail form. I went through all the steps fine, only when i click the button to create the form, i received the following errors:
ORA-20001: Unable to create master detail page. ORA-06502: PL/SQL: numeric or value error: character to number conversion error
Unable to create Master Detail pages.
Could someone please tell me what's wrong?
Thanks,
Patrick.

We are getting this message in several areas in the development environmnet. It's happening in the developer login screen, when creating new tabs, and when tryig to create master detail reports. Here is our error from the Apache Log:
[Mon Mar 2 11:41:31 2009] [error] [client 10.64.8.231] [ecid: 1236012090:148.94.143.136:24226:0:1621,0] mod_plsql: /pls/apex_qmnt/wwv_flow.accept HTTP-404 ORA-06502: PL/SQL: numeric or value error\nORA-06512: at line 31\n
I think this is different from the issue above as that is due to too many items in a shuttle list. Ours seems to be related to our new APEX insstallation. Any help is appreciated here.

Many to many master detail form

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